[clang] [CIR] Implement folder for VecCreateOp (PR #143355)

[Andy Kaylor via cfe-commits]

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@@ -1533,6 +1533,17 @@ LogicalResult cir::GetMemberOp::verify() {
 // VecCreateOp
 //===----------------------------------------------------------------------===//
 
+OpFoldResult cir::VecCreateOp::fold(FoldAdaptor adaptor) {
+  auto elements = getElements();
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andykaylor wrote:

Don't use auto here.

https://github.com/llvm/llvm-project/pull/143355